Reduce complexity of agent.trip.get_locations().

agenda/trip.py

@@ -211,6 +211,26 @@ def add_coordinates_for_unbooked_flights(
     )
 
 
+def stations_from_travel(t: StrDict) -> list[StrDict]:
+    """Stations from train journey."""
+    station_list = [t["from_station"], t["to_station"]]
+    for leg in t["legs"]:
+        station_list.append(leg["from_station"])
+        station_list.append(leg["to_station"])
+
+    return station_list
+
+
+def process_station_list(station_list: list[StrDict]) -> StrDict:
+    """Proess sation list."""
+    stations = {}
+    for s in station_list:
+        if s["name"] in stations:
+            continue
+        stations[s["name"]] = s
+    return stations
+
+
 def get_locations(trip: Trip) -> dict[str, StrDict]:
     """Collect locations of all travel locations in trip."""
     locations: dict[str, StrDict] = {
@@ -223,10 +243,7 @@ def get_locations(trip: Trip) -> dict[str, StrDict]:
     for t in trip.travel:
         match t["type"]:
             case "train":
-                station_list += [t["from_station"], t["to_station"]]
-                for leg in t["legs"]:
-                    station_list.append(leg["from_station"])
-                    station_list.append(leg["to_station"])
+                station_list += stations_from_travel(t)
             case "flight":
                 for field in "from_airport", "to_airport":
                     if field in t:
@@ -236,11 +253,7 @@ def get_locations(trip: Trip) -> dict[str, StrDict]:
                     terminal = t[field]
                     locations["ferry_terminal"][terminal["name"]] = terminal
 
-    for s in station_list:
-        if s["name"] in locations["station"]:
-            continue
-        locations["station"][s["name"]] = s
-
+    locations["station"] = process_station_list(station_list)
     return locations